Phoenix Contact 2834643 General Purpose Relay DPDT 10A 24V

Part Overview

The Phoenix Contact 2834643 is a general purpose relay with DPDT (2 Form C) contact configuration, rated for 10A at 24VDC coil voltage. This relay is designed for DIN rail mounting with screw terminal connections and includes integrated diode and lighted indicator features. The part is currently listed as obsolete, making identification of suitable substitute components necessary for ongoing system maintenance and new design implementations.

Substiute Parts

2834643

Phoenix ContactIn Stock: 9242834643 Datasheet

Current PartRFQ

2903326

Phoenix ContactIn Stock: 12422903326 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Phoenix Contact 2834643 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Coil Voltage: 24VDC
• Contact Form: DPDT (2 Form C)
• Contact Rating (Current): 10 A minimum
• Mounting Type: DIN Rail
• Termination Style: Screw Terminal
• Coil Type: Non Latching

Allowable Variations:

• Switching Voltage: Substitute must meet or exceed 250VAC; 125VDC minimum requirement
• Contact Material: Silver (Ag) or Silver Nickel (AgNi) acceptable
• Operating Temperature Range: Substitute range may extend beyond original specification
• Coil Current: Minor variations acceptable within design tolerance
• Operate/Release Time: Variations within millisecond range acceptable for general purpose applications
• Product Status: Active status preferred for long-term availability

The Phoenix Contact 2903326 qualifies as a direct substitute based on these criteria.

Parameter Comparison

Engineering Selection Recommendations

The Phoenix Contact 2903326 is the qualified substitute for the obsolete 2834643. Selection is based on the following engineering factors:

Product Status: The 2903326 maintains active product status with current manufacturing support, ensuring long-term availability and supply chain continuity compared to the obsolete 2834643.

Compliance: The 2903326 meets ROHS3 compliance requirements and is REACH unaffected, providing enhanced regulatory alignment for new designs and system upgrades.

Electrical Compatibility: Both relays share identical coil voltage (24VDC), contact form (DPDT), current rating (10A), and termination configuration (screw terminal). The 2903326 provides enhanced switching voltage capability at 250VDC maximum versus 125VDC on the original part, expanding application flexibility.

Mechanical Compatibility: DIN rail mounting and socket inclusion ensure direct physical compatibility in existing installations.

Contact Material Upgrade: The 2903326 uses Silver Nickel (AgNi) contacts versus Silver (Ag) on the original part, providing improved contact durability and wear resistance for extended operational life.

Temperature Performance: The 2903326 extends the lower operating temperature limit to -40°C, broadening environmental application range.

Frequently Asked Questions (FAQ)

Q: Can the Phoenix Contact 2903326 directly replace the 2834643 in existing installations?

A: Yes. Both relays share identical coil voltage (24VDC), contact configuration (DPDT), current rating (10A), mounting type (DIN rail), and termination style (screw terminal). Physical and electrical compatibility is confirmed.

Q: What are the differences between these two relays?

A: The primary differences are product status (2903326 is active versus 2834643 obsolete), contact material (AgNi versus Ag), maximum switching voltage (250VDC versus 125VDC), release time (14ms versus 5ms), operating temperature range (-40°C to 60°C versus -25°C to 60°C), and compliance certifications (ROHS3 versus RoHS).

Q: Does the higher coil current (42mA versus 38mA) on the 2903326 affect circuit design?

A: The 4mA difference is within normal design tolerance for 24VDC relay circuits. Existing power supply and control circuit designs will accommodate this variation without modification.

Q: Is the Silver Nickel contact material compatible with existing applications?

A: Yes. Silver Nickel contacts are suitable for general purpose relay applications and provide improved durability compared to pure silver contacts. No application-specific limitations apply.

Q: What is the significance of the extended temperature range on the 2903326?

A: The 2903326 operates from -40°C to 60°C versus -25°C to 60°C on the original part. This extended lower temperature capability allows deployment in colder environments without performance degradation.

Q: Are there packaging differences between these parts?

A: The 2834643 is packaged as individual units with socket included. The 2903326 is supplied in bulk packaging. Both include socket and identical feature sets (diode, lighted indicator).